Phineas is driving a car down the street at a certin speed, he slams on the brakes, causing the car to immediately go into a skid. He comes to a stop 100 ft later. Ferb takes a turn driving the same but at a speed twice as fast as Phineas' speed. He slams on the brakes and immediately begins to skid. How far does he travel before he comes to a stop?

a. 50 ft.

b. 100 ft.

c. 200 ft.

d. 400 ft.

e. 10,000 ft

f. Impossible to tell, more information is needed